Sir Jimmy Savile's former PA, Janet Cope, told ITV1 Exposure, "Jimmy was untouchable".
Ms Cope claims Savile had "total" access at the high-security hospital and "was very proud of the fact that he spoke to all these very high-profile poorly criminals".
ITV1 Exposure Update: The Jimmy Savile Investigation will be broadcast at 10.35pm tonight.
More top news
Sepp Blatter has resigned as Fifa president following widespread allegations of corruption at football's world governing body
Police said the teenager pulled out in front of a convoy of British military vehicles which had the right of way and her car was flattened.
Police are investigating a video which appears to show a schoolboy being punched by another teenager a week before he was found hanging.